Modelling of the Inverse Creep of Road Bitumen Modified With SBS Copolymer
DOI:
https://doi.org/10.3846/bjrbe.2012.10Keywords:
bitumen, copolymer, rheology, viscoelasticity, relaxation, strain recovery, inverse creepAbstract
Polymer modified road bitumens, being examples of viscoelastic materials, are very interesting with respect to rheology. The phenomenon of inverse creep (retarded strain recovery) observed in samples of asphalt binders modified by the addition of SBS copolymer was analyzed in the present paper. Laboratory tests of strain recovery were conducted on samples of the three selected asphalt binders: the 50/70 penetration grade base bitumen and binders modified by the addition of 4% and 8% of the SBS copolymer. The extended procedure for the determination of elastic recovery was used as the research method. The results of the experiment were approximated using three linear viscoelastic rheological models: Burgers, Dual Kelvin+Newton and Dual Kelvin+Maxwell. When analyzing the results of modelling carried out by using the Burgers model it has been found that they were not satisfactory. Much greater compatibility of modelling and experiment results (R2 > 0.99) was achieved by using models containing the dual Kelvin element.
References
Barnes, H. A.; Hutton, J. F.; Walters, K. 1989. An Introduction to Rheology. Amsterdam: Elsevier Science Publishers B. V. 199 p. ISBN 0444874690.
Bodnar, A.; Chrzanowski, M.; Latus, P. 2006. Reologia konstrukcji prętowych. Cracow: Cracow University of Technology. 242 p. ISBN 8372424098 (in Polish).
Cebon, D. 2000. Handbook of Vehicle-Road Interaction. Lisse: Swets & Zeitlinger Publishers B. V. 601 p. ISBN 9026515545.
Derski, W.; Ziemba, S. 1968. Analiza modeli reologicznych. Warsaw: Polish Scientific Publishers PWN. 160 p. (in Polish).
Grabowski, W.; Kuczma, M.; Slowik, M. 2002. Mathematical Modelling of Rheological Properties of Polymer Modified Bitumens, Foundations of Civil and Environmental Engineering 2: 27–42.
Grabowski, W.; Slowik, M. 2003. Assessment of Selected Rheological Properties of Polymer Modified Bitumens Applied in Poland, International Journal of Pavements 2(3): 14–23.
Ho, S.; Zanzotto, L. 2005. The Low Temperature Properties of Conventional and Modified Asphalt Binders Evaluated by the Failure Energy and Secant Modulus from Direct Tension Tests, Materials and Structures 38: 137–143. http://dx.doi.org/10.1007/BF02480586
Judycki, J. 1989. Elasticity of Road Bitumens Modified with Elastomers, Archives of Civil Engineering 35(3–4): 373–385 (in Polish).
Laurinavičius, A.; Oginskas, R.; Žilionienė, D. 2006. Research and Evaluation of Lithuanian Asphalt Concrete Road Pavements Reinforced by Geosynthetics, The Baltic Journal of Road and Bridge Engineering 1(1): 21–28.
Radziszewski, P. 2007. Modified Asphalt Mixtures Resistance to Permanent Deformations, Journal of Civil Engineering and Management 13(4): 307–315.
Scholten, E. J.; Vonk, W.; Korenstra, J. 2010. Towards Green Pavements with Novel Class of SBS Polymers for Enhanced Effectiveness in Bitumen and Pavement Performance, International Journal of Pavement Research and Technology 3(4): 216–222.
Skrzypek, J. 1986. Plastyczność i pełzanie. Warsaw: Polish Scientific Publishers PWN. 360 p. ISBN 8301062207 (in Polish).
Slowik, M. 2010. Analiza niepewności pomiarowych przy ocenie właściwości asfaltów drogowych, Archives of Institute of Civil Engineering 7: 129–144 (in Polish).
Yildirim, Y. 2007. Polymer Modified Asphalt Binders, Construction and Building Materials 21(1): 66–72. http://dx.doi.org/10.1016/j.conbuildmat.2005.07.007
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